In the development of the Internet, there are many milestones. In the following options, which order of the milestones is normal?

In the development of the Internet, there are many milestones. In the following options, which order of the milestones is normal?
A . Establishment of the TCP/IP protocol specification – the birth of ARPANET – www officially open to the public – the birth of DNS
B . www officially open to the public – the birth of DNS – the establishment of the TCP/IP protocol specification – the birth of ARPANET
C . The birth of ARPANET – the establishment of the TCP/IP protocol specification – the birth of DNS – www officially open to the public
D . The birth of DNS – the establishment of the TCP/IP protocol specification – the birth of ARPANET – www officially open to the public

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Answer: C